package com.example.config;

import com.example.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.apache.coyote.http2.Http2AsyncUpgradeHandler;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Configuration
@Slf4j
public class WebMvcConfig extends WebMvcConfigurationSupport {
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("访问静态资源");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建新的消息转换器
        MappingJackson2HttpMessageConverter messageConverter=new MappingJackson2HttpMessageConverter();
        //设置对象转换器，使用jackson把java对象转为json
        messageConverter.setObjectMapper(new JacksonObjectMapper());
        //把新的转换器存入mvc框架中,放在最前面优先使用
        converters.add(0,messageConverter);
    }
}
